| Faber-Castell 8/20 | |
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Front |
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| Box | |
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| Diameter | 9.5cm |
| Number of scales | 2 |
| Country of origin | Germany |
| Country of manufacturing | Germany |
| Year of manufacturing | 1967 |
| Status of the slide rule | Normal signs of use |
| Material of the slide rule | Plastic |
| Type of cursor | Clear plastic |
| Status of the box | Normal signs of use |
| Type of box | Brown PVC sleeve |
| Status of the manual | None |
| Collection number | 191 |
| Further comments | The most simple calculator disk of
Faber-Castell.
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